Apparatus and method for providing a scent

ABSTRACT

An apparatus and method for providing a scent to a compartment comprising a reusable holder having a connecting means and a scented card insertable into the holder. The connecting means can be a clip which is connectable to a louver of an air duct outlet register of a forced air system or to a fan guard of a utility fan. The apparatus can also be modified to attach to an interior surface of a refrigerator and may even be adaptable for use as costume jewelry. The scented card is produced by a process wherein a heat extrudable thermoplastic material is mixed with a chemical blowing agent and at least one fragrance and optionally a coloring agent, the mixture of material and fragrance is heated and extruded to produce a flat fragrant sheet of material which after being trimmed, forms a relatively rigid but flexible card insertable into the holder and removable therefrom.

"This is a continuation of copending application Ser. No. 07/834,910filed on Feb. 1992."

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to devices used to provide a scent, and moreparticularly, but not by way of limitation, to devices used to provide ascent to a specific confined area in combination with a forced air flow.

2. Brief Description of the Related Art

There are a variety of circumstances which make it desirable to providea scent or fragrance to a particular area. For example, rooms, kitchens,offices or enclosed compartments such as closets or vehicle interiorsmay acquire odors which are wished to be dispelled or otherwise masked.Devices known as air fresheners which utilize spray applicators or whichare placed on an open surface in a room are widely available to providesuch a scent. Spray applicators require manual assistance whenever theiruse is desired. Stationary, devices, although not requiring manualassistance after initial installation, must be replaced ratherfrequently and are not equipped with a means for distributing thefragrance about the space except by ambient air movement, resulting inan uneven distribution of fragrance about the room. Moreover, regularuse and replacement of the devices or sprays can generate a significantaccumulation of refuse over time contributing to the solid wasteproblem.

Another method-which is available to provide a fragrance to a room is toattach a packet of fragrance to the input air filter of a heating or airconditioning system whereby the air flowing over the filter is treatedwith the fragrance from the fragrance packet. The air is distributed toall compartments served by the system thereby treating the air in allcompartments without having to treat the rooms on an individual basis.This method suffers from at least two drawbacks in that individual roomsor compartments are prevented from being treated separately (all roomsmust have the same scent) and in general the air freshening packetscommercially available have a rather short effective life because thefragrance is supplied by felt pad or by some other porous material whichhas been saturated with the fragrant oil. In another method thefragrance is provided by a cake of material which is designed to releaseits fragrance by sublimation of the cake as air passes over it. Thus thecake (which may be comprised of a gel or gel-like material) graduallyevaporates until only a residue is left. Air treatment methods which areattached to the intake filter of a forced air system further tend tosuffer effects of dust fouling wherein dust accumulates on the airtreatment device thus reducing its ability to release fragrance.

It can be seen from the foregoing that current methods of providing afragrance to the air in an area suffer from a number of drawbacks whichlimit their applicability or usefulness in particular situations. It isthe particular object of the present invention described herein toovercome these limitations and drawbacks thereby improving and enhancingthe manner in which fragrance is provided to an area.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of the scenting apparatus showing a scentedcard partially inserted into the card holder.

FIG. 2 is a plan view of the apparatus shown in FIG. 1 with the cardfully inserted into the card holder.

FIG. 3 is a side elevational view of the apparatus shown in FIG. 1.

FIG. 4 is a side cross-sectional view taken through the planes shown aslines 4--4 on FIG. 2.

FIG. 5 is a perspective view of a scented card having a rectangularshape.

FIG. 5A is a perspective view of a scented card having a square shape.

FIG. 5B is a perspective view of a scented card having a circular shape.

FIG. 6 is a perspective view of the apparatus of FIG. 1 clipped to alouver of an air duct register.

FIG. 7 is a perspective view of the apparatus of FIG. 1 clipped in twomanners to blades of a ceiling fan.

FIG. 8 is a perspective view of an alternative embodiment of thescenting apparatus.

FIG. 9 is a side cross-sectional view of the apparatus of FIG. 8indicating the fan and fan drive means within the apparatus.

FIG. 10 is a perspective view of an alternative embodiment of theapparatus designed for use as a refrigerator shelf.

FIG. 11 is a front elevational view of an alternative embodiment of thescenting apparatus.

FIG. 11A is a rear elevational view of the apparatus shown in FIG. 11.

FIG. 12 is a side cross-sectional view of the apparatus shown in FIGS.11 and 11A.

FIG. 12A is a side cross-sectional view of an alternative embodiment ofthe apparatus in FIGS. 11 and 11A in which the front side is detachablefrom the rear side.

FIG. 12B is a side cross-sectional view of an alternative embodiment ofthe apparatus shown in FIG. 11 wherein the attaching means is a flatadhesive surface rather than a clip.

FIG. 13 is a perspective view of an alternative embodiment of thescenting apparatus.

FIG. 14 is a perspective view of a piece of costume jewelry comprised ofthe scented card material of the present invention.

FIG. 14A is a perspective view of a piece of costume jewelry containinga scented card.

FIG. 14B is yet another example of a piece of costume jewelry containinga scented card.

FIG. 14C is yet another example of a piece of costume jewelry comprisedof the scented card material of the present invention.

BRIEF DESCRIPTION OF THE INVENTION

The invention described herein comprises an apparatus and method forproviding a scent to an area. The invention includes a novel materialderived from a thermoplastic copolymer resin within which is entrapped afragrance. The processed fragrant thermoplastic material is cut, trimmedor otherwise formed into relatively rigid, but flexible shapes adaptableto a variety of uses and circumstances. In a preferred embodiment, thescented material is shaped into a flat rectangular card insertable intoa holder having a connecting means, such as a clip, for connecting theholder to a louver of an air duct register of a forced air blowingassembly such as a heating and air conditioning system. As air is forcedthrough the air duct by the air blowing means of the forced air system,it is scented with the fragrance contained within the scented card heldwithin the card holder as the fragrance volatilizes from the card. Theroom, office, or compartment thus becomes scented with the fragrance.Each time the forced air system is reactivated, the fragrance within theroom is renewed.

Because the present apparatus is attached to a ducted outlet portion ofa forced air system rather than to the air inlet, individual rooms,offices or compartments such as vehicle interiors, elevators, storageareas, basements, hallways, closets, kitchens, restrooms or bathrooms,or similar areas serviced by the air distribution system may be scentedwith different fragrances or may be left unscented. Other air scentingmethods or devices which are integrated with forced air systems do notallow this flexibility or ease of operation because they are typicallyattached to the inlet filter of the system and thus distribute scent toall rooms or compartments serviced by the system.

Another advantage of the present invention is ease of application. Theholder with the scented card inserted is simply clipped to an air ductregister. The apparatus is thus out of view and out of the reach ofsmall children who may be tempted to touch, grab, hold, chew, carry offor otherwise manipulate the apparatus. Moreover, since the apparatus isattached to an air duct register louver, valuable area on surfaces suchas table tops, shelves, ledges, or sills need not be occupied as wouldbe the case for stationary air fresheners which must rest upon lateralsurfaces. This not only serves to reduce the clutter within a room butalso eliminates the concern one might have regarding the visual appealof such other air fresheners or how well they integrate into the overallappearance of the room, office or compartment. Additionally, the presentinvention, being of a small and flat size which could easily be graspedin one's hand, will generate less solid waste. In particular, since thescented card is removable from the holder, when the scent hasdiminished, only the scented card need be replaced. The holder isreusable and thus need not necessarily be disposed. It is notable thatcertain other scent providing substances such as cakes, gels and othersemi-solid materials are not nearly so adaptable to easy removal andinsertion and thus the opportunities for reuse of such materials andholders of such materials are very limited, unlike the presentinvention.

It will be seen that the card holder and the scented thermoplasticmaterial novel to this invention is adaptable to a variety of otherscent-providing embodiments. For example, the card holder and connectingmeans could be modified to make the apparatus connectable, for exampleby a clip, to the protective guard of a fan assembly having a guard andfan-blade such as an oscillating fan or utility fan. The connectingmeans could also be an adhesive backing allowing the card holder to beconnectable to the interior wall of a refrigerator compartment. Inanother embodiment, the scented card can be inserted into the housing ofa portable fandriven device having a solar, battery or electric-poweredmotor which could serve to provide a scent to an area such as an officeor waiting room. In another example, the connecting means of thecard-holder apparatus could be modified to be connectable by clipping tothe shelf or other surface within the interior of a refrigerator for thepurpose of scenting or deodorizing the interior of the refrigerator. Thescented thermoplastic material could be further modified to be formedinto the shape of an actual refrigerator shelf which would function notonly to support items within the compartment but also to deodorize andfreshen the air within the compartment. Other confined areas such asvehicle interiors could also benefit from the scenting properties of theapparatus if the holder was adapted to be connectable to surfaces foundin vehicles, such as the louvers on an air conditioning and heatingoutlet on an automobile dashboard. Finally, it will be seen that due toits scent-providing properties, the scented thermoplastic material iseasily adaptable to its use in various types of costume jewelry such asfinger rings, ear rings, bracelets, necklaces, charms, hair pins, hairbarrettes, brooches, and lapel buttons and other types of costumejewelry or any combination of these which would be attractive to youngpersons as a fad item.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment of FIGS. 1-7

Shown in FIGS. 1-4 is an apparatus 10 for providing a scent. Theapparatus 10 comprises a card 20 having scent incorporated therein andhaving a substantially flat upper surface 22, a substantially flat lowersurface 24, a first end side 26, a second end side 28, a first lateralside 30, and a second lateral side 32. In the preferred embodiment, thescented card 20 has a thickness 33 extending between the upper and lowersurfaces 22 and 24 in the range of from one-thirty secondths of an inchto three-sixteenths of an inch, a length 35 extending between the firstend side 26 and the second end side 28 in the range of from three inchesto four and one-half inches and a width 37 extending between the firstlateral side 30 and the second lateral side 32 in the range of from oneand one-half inches to two and one-half inches. The apparatus 10 furthercomprises a rectangular box-shaped card holder 40 having an uppersurface 42, a lower surface 44, a first end 46, a second end 48, a firstlateral side 50, and a second lateral side 52. The card 20 is insertableinto the holder 40 and removable therefrom so the card 20 may bereplaced when the scent no longer is being emitted from the card 20. Thecard 20 is relatively rigid, but flexible.

The holder 40 further comprises a slot 54 in the first lateral side 50,a similar slot (not shown) in the second lateral side 52, an opening 56in the upper surface 42, an opening 57 in the lower surface 44, aclipping or connecting means 58 connected to the holder 40 for removablyconnecting the holder 40 to an object, an end slot 60 in the first end46, and an interior space 62 substantially encompassed by the holder 40.

The slot 60 in the preferred embodiment has a length extending betweenthe first lateral side 50 and the second lateral side 52 in the range offrom one and three-fourths inches to two and three-fourths inches and aheight in the range of from one-sixteenth of an inch to one-fourth of aninch, such that the width 37 of the card 20 is less than the length ofthe slot 60 and the thickness 33 of the card 20 is less than the heightof the slot 60. The space 62 in the preferred embodiment has a length inthe range of from three to four and one-half inches, a width in therange of from one and three-fourths inches to two and three-fourthsinches and a height in the range from one-sixteenth of an inch toone-fourth of an inch.

FIG. 2 shows a frontal view of the surface 42 of the holder 40 whereinthe upper surface 22 of the card 20 is shown fully inserted into theholder 40. FIG. 3 is a side elevational view of the apparatus 10. FIG. 4is a side cross-sectional view of apparatus 10.

Shown in FIGS. 5, 5A and 5B are three embodiments of cards which may beinserted into various embodiments of apparatus 10. FIG. 5 shows therectangular card 20 as described previously. FIG. 5A shows a square card20a having an upper surface 22a, a lower surface 24a and equal lateralsides 26a. Shown in FIG. 5B is a round card 20b having an upper surface22b, a lower surface 24b, and a peripheral side 26b, which would beadaptable for use in the scent providing embodiment of FIG. 8 and 9described below. It will be understood by those skilled in the art thatnumerous other geometric, asymmetric and fanciful shapes of cards areconceivably useful in various situations. For example, other cards maybe in the shape of a triangle, an oval, an ellipse, a trapezoid, a starand a parallelogram, wherein the card holder is of a shape adapted tohold a card with such a shape.

Shown in FIG. 6 is one example of how the apparatus 10 is attached tothe register 70 of an air outlet duct (not shown). The apparatus 10 isclipped on a louver 72 of the air duct register 70 wherein air flowingthrough the air outlet duct and out the air duct register 70 is treatedby the fragrance emitted from the card 20 of the apparatus 10 whereinair flowing through the air duct register 70 is distributed throughoutthe room.

FIG. 7 shows a ceiling fan 74 having a plurality of ceiling fan blades76, each ceiling fan blade 76 having an upper surface 77 and a lowersurface 78. The apparatus 10 can be clipped as indicated in FIG. 7 tothe upper surface 77 of a fan blade 76 or to the lower surface 78 of afan blade 76 wherein the scent within the apparatus 10 is distributed tothe ambient air as the blades 76 of the ceiling fan 74 rotate.

Embodiments of FIGS. 8 and 9

FIG. 8 shows an apparatus 10a which is a portable scenting blowerdevice. The apparatus 10a is designed to be placed on a desk (not shown)or other surface in an office or room, for example a waiting room, forscenting the ambient air within the office or the room.

The apparatus 10a is comprised of a housing 92 which has an upper end 94and a lower end 96. A plurality of air in-take vents 98 are arrangedalong the lower end 96 of the housing 92. A plurality of air out-flowvents 100 are distributed about an outer peripheral surface 101 of thehousing 92 near the upper end 94. An arrangement of solar cells 102 islocated in the upper end 94 for the purpose of providing power.

The housing 92 includes a card insertion slot 104 formed through theouter peripheral surface 101 between the upper end 94 and the lower end96 through which the card 20b is inserted. To facilitate the removal ofthe card 20b from the housing 92, an indention 118 is formed across thecard insertion slot 104. The card 20b is supported on a support surface106 within the interior space 91 of the housing 92, the interior space91 being substantially encompassed by the housing 92.

FIG. 9 is a vertical cross-sectional view through apparatus 10a. Theapparatus 10a includes a fan 108 driven by a fan-drive means 110 for thepurpose of circulating air within space 91 of the apparatus 10a. Thefan-drive means 110 is powered by solar cells 102. In alternativeembodiments, the fan may be driven by battery means (not shown), by ACelectricity means (not shown) or even by a gas-powered means (notshown). The fan 108 draws air from the outside through the air in-takevents 98 in the direction 112 and circulates the air past the card 20bin the direction 114 where air flows out of the apparatus 10a throughair out-flow vents 100 after the air has volatilized fragrance from thecard 20b. The card 20b is removable from the housing 92.

Embodiment of FIG. 10

FIG. 10 shows an article having a predetermined shape or, moreparticularly, a refrigerator shelf 12 which is formed from a scentedsheet of material which includes a fragrant scent or a fragrantdeodorizing material for the purpose of scenting or deodorizing the airwithin a refrigerator compartment (not shown). The shelf 12 is comprisedof an upper surface 122, a lower surface 124, a first end 126, a secondend 128, a first lateral side 130 and a second lateral side 132. Theshelf 12 has a plurality of slots 134 which extend through the uppersurface 122 open to the lower surface 124. The shelf 12 has a firstlateral 136 arm which is elevated above the shelf surface and a secondlateral arm 138 which is elevated above the shelf surface 122 whichallows the shelf 12 to rest on support means (not shown) of the interiorrefrigerator wall for the purpose of supporting the shelf 12. The shelf12 may be reinforced with reinforcing bars (not shown) composed of arigid material such as metal or plastic which serve to provideadditional strength to the shelf 12.

Embodiments of FIGS. 11-13

FIG. 11 shows an article having a predetermined shape or, moreparticularly, a clip-on scenting apparatus 10c which is designed toconnect to surfaces which do not accept the connecting means 58 ofapparatus 10. The apparatus 10c for example could be designed to clip onthe bars of a refrigerator shelf or to the bars of the guard of autility or oscillating fan. A utility fan will be understood to be aportable or movable fan which has a purpose of forcing air movementwithin a given area, such as a room or hallway. An oscillating fan is autility fan capable of changing by rotation its direction of airmovement.

The apparatus 10c has an upper surface 140 within which are arranged aplurality of slots 142. FIG. 11 shows the slots 142 arranged in apattern of concentric octagons. As shown in FIG. 11A, the apparatus 10chas a lower surface 144 within which are arranged a plurality of slots146 formed in the shape of concentric circles. However, it will beapparent that any number of geometric patterns of slots 142 in the uppersurface 140 or slots 146 in the lower surface 144 would be feasible forthe purpose of ventilating the apparatus 10c. For example, the patterncould be a series of concentric pentagons, hexagons, triangles, or evena plurality of discrete geometrically-shaped openings in the surfacesuch as independent squares, stars or circles or combinations of these.The pattern could also be a fanciful decoration similar to that of theopening 56 indicated on apparatus 10.

A connecting means 148 is arranged on the lower surface 144 of theapparatus 10c for the purpose of clipping or connecting the apparatus10c on to an object capable of receiving the connecting means.

A side cross-sectional view of the apparatus 10c is shown in FIG. 12.FIG. 12 indicates the plurality of slots 142 in the upper surface 140and a plurality of slots 146 in the lower surface 144. Air flows throughthe slots 146 in the direction 150 into the interior of the apparatus10c wherein is located a card 20b which has been inserted into a slot154. Scented air flows out of the apparatus 10c through the slots 142 inthe upper surface 140 in the direction 152 for the purpose of scentingthe compartment within which is located the apparatus 10c.

FIG. 12A shows a modified clip-on apparatus 10d which is constructedexactly like the apparatus 10C, except the apparatus 10d includes anupper part 155 attachable to and detachable from the lower part 157 byan engaging means 156 in the upper part 155 which is engageable with anotch 158 in the lower part 157 for the purpose of attaching andreattaching the upper part 155 to the lower part 157. In the embodimentof the apparatus 10d, the card 20b is insertable into the apparatus 10dby detaching the upper part 155 from the lower part 157 wherein the card20b is placed up against the lower part 157 and the upper part 155 isreattached to the lower part 157 by the engaging means 156 which isengagingly engaged with the notch 158 in the lower part 157.

FIG. 12B shows a further embodiment of the apparatus 10e. Apparatus 10ehas an adhesive backing 160 which serves as a connecting means and whichmay connect the apparatus 10e to an interior wall of a refrigerator, forexample. Additionally the lower surface 144 of the apparatus 10e may nothave air in-flow slots 146 as indicated in FIG. 12B or may have airin-flow slots (not shown) in another embodiment in which the slotssurround the adhesive backing 160.

Indicated in FIG. 13 is another version of the apparatus in which theapparatus 10f is a modified clip-on apparatus 10f having a clippingmeans 162 and a decoratively designed opening 164 in the upper surface166 of the apparatus 10f. The clip-on scenting apparatus 10f could servethe function of attaching to a clip-on surface (not shown) in anautomobile or could even clip-on to a piece of clothing (not shown) forthe purpose of providing an attractive scent.

Embodiments of FIGS. 14-14C

A further embodiment of the apparatus could be in the form of an articlehaving a predetermined shape or, more particularly, costume jewelry asindicated in FIGS. 14-14C. In these figures are indicated the scentproviding materials which are shaped in various decorative and fancifulshapes such as a candy cane 20d, a heart 20e, a star 20f, and a cat 20g.These figures are merely a sample of the innumerable decorative andfanciful shapes and patterns which could comprise jewelry or charms. InFIG. 14 is indicated a candy cane shaped piece of jewelry 170 having anattaching means 172, the attaching means 172 could be an earlobe hook ora means to attach the jewelry 172 to a bracelet such as a charm bracelet(not shown).

In a similar manner FIG. 14A indicates a piece of heart shaped jewelry170a containing a heart shape card 20e within the holder of 170a. Theholder 171 comprises an upper surface 176 and a lower surface 178 and anopening 180 through the upper surface 176 and the lower surface 178, thecard 20e thereby being visible through the opening 180. As previouslymentioned for the embodiment 170 in FIG. 14, the piece 170a could beeither an earring attachable by attaching means 172 which could be ahook or attachable to a charm bracelet (not shown) by an attaching means172 which could be a clasp.

FIG. 14B shows a piece of jewelry 170b having the shape of a star. Thejewelry 170b could be an earring attachable by a clasp or by a hook 172or it could be a charm attachable by a clasp means 172 to a charmbracelet (not shown). The jewelry 170b comprises a holder 171 having anupper surface 182, a lower surface 184 and a opening 186 through theupper surface 182 and the lower surface 184 through which is visible thestar shaped card 20f.

FIG. 14C shows another potential embodiment of the apparatus in theshape of the apparatus 170c and in the shape of a cat wherein thejewelry 170c comprises only the scented card 20g and an attaching means172 which could be a hook 172 for attaching the jewelry 20g to anearlobe (not shown) as an earring or which could be a clasping means forattaching the jewelry to as a charm to a charm bracelet (not shown) ornecklace. Other forms of costume jewelry, including pieces connectableby connecting means to clothing, such as brooches, buttons, pins orlapel buttons can be easily envisioned.

Process for Manufacturing the Scented Material

The scented material used to produce the scented cards comprises athermoplastic material having a fragrance. In general, the process ofproducing a scented sheet of material comprises providing a dry,particulate thermoplastic material, blending a chemical blowing agentand at least one fragrance or deodorizing agent into the thermoplasticmaterial to form a mixture, heating the mixture in a thermoplasticextruder wherein the mixture is melted and the chemical blowing agent isactivated thereby producing, in the plastic, gas pockets within whichthe fragrance is trapped. Following, this, the process includesextruding the heated mixture from the extruder, forming a flat sheet ofmaterial from the extruded material, and at some point, trimming andcutting the sheet of material into cards having sizes and shapessuitable for insertion into holders or for other uses such as costumejewelry or refrigerator shelves as discussed above. The process mayfurther comprise adding at least one coloring agent to the mixture priorto processing. The mixture is generally heated to that temperaturesufficient to melt the thermoplastic material and activate the chemicalblowing agent. This temperature may be approximately 280 degreesFahrenheit, however, other temperatures may be utilized for differenttypes of ingredients and different conditions.

In a preferred embodiment of the process, dry pellets of the copolymerresin ethylene-vinyl acetate are mixed with at least one fragrant oil, achemical blowing agent and, optionally, a coloring agent. Ethylene-vinylacetate is available commercially, for example, under the trade nameELVAX® from Du Pont Company. The preferred grade of ELVAX resin would bechosen from the group including ELVAX 470, 650, 660, 670 and 770, but isnot restricted solely to these grades. A chemical blowing agent is onewhich, when activated at a particular temperature will evolve gasthereby providing bubbles within which is trapped the fragrance includedin the blend. Azodicarbamide, is one example of a commercially-availablechemical blowing agent which could be used in the blend. Azodicarbamideis available from SAFEFOAM. A variety of coloring agents or compoundssuch as Pantone are obtainable from suppliers such as Americhem, Inc.,and can be optionally mixed with the resin blend to form scented cardshaving a variety of colors. One pound of color compound will colorapproximately 100 pounds of resin. Fragrant oils, available from anumber of sources, including Berje, Inc., are combinable with mineraloil, which serves as a binding agent within the blend of resin, coloringagent, blowing agent and fragrance. The blend is then fed into anextrusion device (such as one available from Killion Extruders, Inc.)and heated to approximately 280° F., at which point the resin is meltedand the chemical blowing agent is activated to evolve gas and form gaspockets within the plastic. As the blended ingredients move through theextruder the fragrance is trapped within the pockets of gas (although incertain embodiments in which a more rigid card or sheet is desired, theamount of chemical blowing agent may be reduced or altogether eliminatedfrom the process). As the material proceeds through the extruder thetemperature of the material is gradually reduced and as it exits, iscaught by a sheet take-off machine (also available from KillionExtruders, Inc.). The take-off machine processes the extruded materialthrough a series of chilled rollers which removes the remaining heatfrom the processed plastic as it is shaped into a flat uniform sheet. Atthe end of the line, a shearer cuts and trims the sheet of material intoappropriately shaped cards, generally in a shape insertable into thevarious types of holders described earlier.

The result of the process is a, relatively rigid, but flexible solidcard generally having a thickness of from one-thirty-secondths of aninch to three-sixteenths of an inch. In the preferred embodiment wherethe card is adapted to be inserted into a holder for being attached tothe register of an air duct, the length of the card would generally bewithin the range of from three to four inches and the width would be inthe range of from one and one-half inches to two and one-half inches,although these sizes may be somewhat smaller or larger depending on thecircumstance. For example, in the circumstance in which the compartmentto be scented is especially large and the size of the air duct registeris unusually large, the dimensions of the scented card and the holdermay be proportionately larger than the dimensions of a scenting devicefor a smaller register.

The scented sheet of material or card is also characterized as beingsubstantially free of liquid, wherein the liquid is a free oil,containing fragrance, or moisture, wherein moisture is water boundwithin a colloidal support phase and a fragrance to create a semi-solidmaterial such as a gel or cake-like material.

Changes may be made in the various elements and assembly describedherein or the steps or the sequence of steps of the methods describedherein without departing from the spirit and the scope of the inventionas defined in the following claims.

What is claimed is:
 1. An article removably connected to a registerhaving a plurality of louvers wherein the register is operativelyassociated with an air outlet duct and where air flows through the airoutlet duct and into a room for providing a scent in the room,comprising:a holder being sized and shaped to be extended between a pairof the louvers in the register; a card constructed of a relatively rigidthermoplastic material having scent incorporated therein, the cardhaving a substantially flat upper surface and a substantially flat lowersurface, a portion of the card being connectable to the holder; andconnecting means connected to the holder, the connecting means beingremovably connected to one of the louvers in the register with theholder extending between a pair of the louvers in the register and intothe register, air flowing through the air outlet duct and contacting thecard for carrying scent from the card into the room.
 2. The article ofclaim 1 wherein the card connected to the holder is substantially freeof moisture.
 3. The article of claim 1 wherein the card furthercomprises:a first end side, a second end side, a first lateral side, anda second lateral side, the card having a thickness extending between theupper surface and the lower surface of the card and a width extendingbetween the first lateral side and the second lateral side.
 4. Thearticle of claim 3 wherein the thickness of the card is defined furtheras being in a range from about one-thirty secondths of an inch to aboutthree-sixteenths of an inch.
 5. The article of claim 4 wherein the widthof the card is defined further as being in a range from about one andone-half inches to about two and one-half inches.
 6. The article ofclaim 4 wherein the card has a length extending between the first endside and the second end side, and wherein the length of the card is in arange from about three inches to about four and one-half inches.
 7. Anarticle operatively associated with a fan having fan blades forproviding a scent in a room comprising:a holder; and a card constructedof a relatively rigid thermoplastic material having scent incorporatedtherein, the card having a substantially flat upper surface and asubstantially flat lower surface, a portion of the card beingconnectable to the holder; and connecting means connected to the holder,the connecting means being removably connected to one of the blades ofthe fan.
 8. The article of claim 7 wherein the card is defined furtheras having a width and a thickness.
 9. The article of claim 7 wherein thecard further comprises a first end side, a second end side, a firstlateral side, and a second lateral side, the card having a thicknessextending between the upper surface and the lower surface of the cardand a width extending between the first lateral side and the secondlateral side.
 10. The article of claim 7 wherein the thickness of thecard is defined further as being in a range from about one-thirtysecondths of an inch to about three-sixteenths of an inch.
 11. Thearticle of claim 10 wherein the width of the card is defined further asbeing in a range from about one and one-half inches to about two andone-half inches.
 12. The article of claim 11 wherein the card has alength extending between the first end side and the second end side, andwherein the length of the card is in a range from about three inches toabout four and one-half inches.
 13. An article operatively associatedwith a refrigerator having an interior, the article for providing ascent comprising:a holder encompassing an interior space, the holderhaving an upper surface and a lower surface with at least one openingbeing formed through the upper surface in communication with theinterior space and at least one opening formed through the lower surfacein communication with the interior space; a card constructed of arelatively rigid thermoplastic material having scent incorporatedtherein, the card having a substantially flat upper surface and asubstantially flat lower surface, a portion of the card being disposedin the interior space in the holder whereby air may pass through theopenings in the upper and the lower surfaces of the holder and contactthe card for carrying scent from the card; and connecting meansconnected to the holder and being removably connected to therefrigerator at a position within the interior of the refrigerator forproviding a scent in the interior of the refrigerator.
 14. The articleof claim 13 wherein the card is defined further as having a width and athickness.
 15. The article of claim 13 wherein the card furthercomprises a first end side, a second end side, a first lateral side, anda second lateral side, the card having a thickness extending between theupper surface and the lower surface of the card and a width extendingbetween the first lateral side and the second lateral side.
 16. Thearticle of claim 13 wherein the thickness of the card is defined furtheras being in a range from about one-thirty secondths of an inch to aboutthree-sixteenths of an inch.
 17. The article of claim 14 wherein thewidth of the card is defined further as being in a range from about oneand one-half inches to about two and one-half inches.
 18. The article ofclaim 14 wherein the card has a length extending between the first endside and the second end side, and wherein the length of the card is in arange from about three inches to about four and one-half inches.
 19. Thearticle of claim 18 wherein the interior space in the holder is definedfurther as having a length in a range of from about three and one halfinches to about four and one half inches, a width in a range of fromabout one and three fourths inches to about two and three fourthsinches, and a height in a range of from about one sixteenth of an inchto about one fourth of an inch.
 20. An article for providing a scentcomprising:a holder having an upper part and a lower part, the upperpart of the holder being detachable from the lower part of the holderand the upper part of the holder being reattachable to the lower part ofthe holder; a card constructed of a relatively rigid thermoplasticmaterial having scent incorporated therein, the card having asubstantially flat upper surface and a substantially flat lower surface,the card being disposed between the upper part and the lower part of theholder when the upper part is detached from the lower part of theholder, and the lower part of the holder being reattached to the upperpart of the holder with the card therebetween for holding the card inthe holder.
 21. The article of claim 20 wherein the card is definedfurther as having a width and a thickness.
 22. The article of claim 20wherein the card further comprises a first end side, a second end side,a first lateral side, and a second lateral side, the card having athickness extending between the upper surface and the lower surface ofthe card and a width extending between the first lateral side and thesecond lateral side.
 23. The article of claim 22 wherein the thicknessof the card is defined further as being in a range from about one-thirtysecondths of an inch to about three-sixteenths of an inch.
 24. Thearticle of claim 23 wherein the width of the card is defined further asbeing in a range from about one and one-half inches to about two andone-half inches.
 25. The article of claim 23 wherein the card has alength extending between the first end side and the second end side, andwherein the length of the card is in a range from about three inches toabout four and one-half inches.
 26. An article for providing a scentcomprising:a housing substantially encompassing an interior space, aslot being formed through the housing in communication with the interiorspace in the housing; a card constructed of a relatively rigid materialhaving scent incorporated therein, the card having a substantially flatupper surface and a substantially flat lower surface, the card beingremovably inserted through the slot in the holder and disposed in theinterior space in the holder; and means in the interior space in thehousing for circulating air in the interior space over the card therebyscenting the air, and for passing the scented air from the housing. 27.The article of claim 26 wherein the housing further comprises an airin-take vent formed through the housing in communication with theinterior space, air being drawn from outside the housing through the airin-take vent and into the interior space in the housing.
 28. The articleof claim 27 wherein the housing further comprises an air outflow vent,the air being passed over the card and passed through the air outflowvent from the housing.
 29. The article of claim 28 wherein the card isdefined further as having a width and a thickness and wherein the slotin the housing is defined further as having a width and a height, thewidth of the card being less than the width of the slot and thethickness of the card being less than the height of the slot in thehousing.
 30. The article of claim 28 wherein the card further comprisesa first end side, a second end side, a first lateral side, and a secondlateral side, the card having a thickness extending between the uppersurface and the lower surface of the card and a width extending betweenthe first lateral side and the second lateral side.
 31. The article ofclaim 30 wherein the thickness of the card is defined further as beingin a range from about one-thirty secondths of an inch to aboutthree-sixteenths of an inch.
 32. The article of claim 31 wherein thewidth of the card is defined further as being in a range from about oneand one-half inches to about two and one-half inches.
 33. The article ofclaim 31 wherein the card has a length extending between the first endside and the second end side, and wherein the length of the card is in arange from about three inches to about four and one-half inches.
 34. Thearticle of claim 33 wherein the interior space in the housing is definedfurther as having a length in a range of from about three and one halfinches to about four and one half inches, a width in a range of fromabout one and three fourths inches to about two and three fourthsinches, and a height in a range of from about one sixteenth of an inchto about one fourth of an inch.
 35. The article of claim 34 wherein theslot in the housing is defined further as having a length in a range offrom about one and three fourths inches to about two and three fourthsinches, and a height in a range of from about one sixteenth of an inchto about one fourth of an inch, such that the width of the card is lessthan the width of the slot and the thickness of the card is less thanthe height of the slot.
 36. An article for providing a scentcomprising:a holder encompassing an interior space, the holder having anopening formed therethrough in communication with the interior space;and a card having a substantially flat upper surface and a substantiallyflat lower surface, the card being constructed out of a relativelyrigid, but flexible thermoplastic material with the card having a scentincorporated therein, a portion of the card being disposed in theinterior space in the holder whereby air may pass through the opening inthe holder and contact the card for carrying scent from the card. 37.The article of claim 36 wherein the card is defined further as having awidth and a thickness.
 38. The article of claim 36 wherein the cardfurther comprises a first end side, a second end side, a first lateralside, and a second lateral side, the card having a thickness extendingbetween the upper surface and the lower surface of the card and a widthextending between the first lateral side and the second lateral side.39. The article of claim 38 wherein the thickness of the card is definedfurther as being in a range from about one-thirty secondths of an inchto about three-sixteenths of an inch.
 40. The article of claim 39wherein the width of the card is defined further as being in a rangefrom about one and one-half inches to about two and one-half inches. 41.The article of claim 39 wherein the card has a length extending betweenthe first end side and the second end side, and wherein the length ofthe card is in a range from about three inches to about four andone-half inches.
 42. The article of claim 41 wherein the interior spacein the holder is defined further as having a length in a range of fromabout three and one half inches to about four and one half inches, awidth in a range of from about one and three fourths inches to about twoand three fourths inches, and a height in a range of from about onesixteenth of an inch to about one fourth of an inch.
 43. An articleoperatively associated with a fan having fan blades for providing ascent in a room comprising:a card constructed of a relatively rigidthermoplastic material having scent incorporated therein, the cardhaving a substantially flat upper surface and a substantially flat lowersurface; and connecting means connected to the card, the connectingmeans being removably connected to one of the blades of the fan.
 44. Thearticle of claim 43 wherein the card is defined further as having awidth and a thickness.
 45. The article of claim 43 wherein the cardfurther comprises a first end side, a second end side, a first lateralside, and a second lateral side, the card having a thickness extendingbetween the upper surface and the lower surface of the card and a widthextending between the first lateral side and the second lateral side.46. The article of claim 45 wherein the thickness of the card is definedfurther as being in a range from about one-thirty secondths of an inchto about three-sixteenths of an inch.
 47. The article of claim 46wherein the width of the card is defined further as being in a rangefrom about one and one-half inches to about two and one-half inches. 48.The article of claim 47 wherein the card has a length extending betweenthe first end side and the second end side, and wherein the length ofthe card is in a range from about three inches to about four andone-half inches.